Nokia NME-2A Series Troubleshooting Instructions
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Nokia NME-2A Series Troubleshooting Instructions

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Programmes After Market Services (P.A.M.S.)
Technical Documentation
NME–2A
SeriesTransceivers
Troubleshooting
Instructions
Original 08/97

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  • Page 1 Programmes After Market Services (P.A.M.S.) Technical Documentation NME–2A SeriesTransceivers Troubleshooting Instructions Original 08/97...
  • Page 2 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation AMENDMENT RECORD SHEET Amendment Date Inserted By Comments Number 08/97 Original Original 08/97 Page 2...

  • Page 3: Table Of Contents

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Contents Page No Troubleshooting Instructions ........BB Troubleshooting Flow Diagrams .
  • Page 4 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation [This page intentionally left blank] Original 08/97 Page 4...

  • Page 5: Troubleshooting Instructions

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Troubleshooting Instructions The purpose is to define fault block of the module and then find out the broken component. The trouble shooting diagram has been planned so that the fault, whatever it is, can be found by as simple measurements as possible.

  • Page 6: Flash Programming Ok; Part 1

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Flash Programming OK; part 1 FLASH programming OK MBUS D250/MCU/pin 3 Display: registration D300/ASIC/pin 97 selftest failed rstrobe Short circuits in data Power Display: data lines. data line stays on? selftest failed disconnected, VREF unconnected VBATT If D250 at...

  • Page 7: Flash Programming Ok; Part 2

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Flash Programming OK; part 2 MCU/D250/pin 10 RESETX +5 V after power on? 26 MHz at MCU 26 MHz clock Change D300 /D250 pin 69 Change D300 D300/pin 119? /MCUCLK? Check components MCU/D250 D301, D302, C306 Check joints /pin 8/MD2, R913, G902, C918...

  • Page 8: Flash Programming Ok; Part 3

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Flash Programming OK; part 3 MBUS registration OK? Display: selftest failed? EEPROM initialization OK? (FLASH8N.MES) D253/EEPROM /pin 27/EROMSELX pulses Check D300 +5 to 0 V during r/w action? D253/EEPROM Check D250 /pin 1/RSTROBEX pulses (D300) +5 to 0 V during r/w action?

  • Page 9: Flash Programming Ok; Part 4

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Flash Programming OK; part 4 Check X100/pin 14 D251/FLASH R271, L250, R264 /pin 11 +12 V during R265, C264 programming? D250/MCU Check X100/pin 6 /pin 64/RXD2 pulses R252, R253, R255 during programming? C254 X100/pin 7 Check D250/pin 63 /TXD2 pulses during R250, R251, C250...

  • Page 10: Pwr Button Fault

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation PWR Button Fault Nothing happends when PWR button Check N101 pin 2 is pressed +6.2 V if not OK change N101 N100/PSL pins N101/pin 4 5,20 +6.2 V When either VBATT voltage XPWRON is low or Check V106, L100 IGNS is high Change N100...

  • Page 11: Display Selftest Failed

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Display Selftest Failed Display selftest failed or phone doesn’t registrate to the system (tester) Use PCLocals to find out a reason Unprogrammed FLASH MCU internal test Unconnected pins in MCU MCU RAM bus test MCU ROM bus test address or data lines MCU IMEI test...

  • Page 12: No Registration To The System (No Serv)

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation No Registration to the System (no serv) No registration to the system (no svc) no call Selftest OK DSP pin 43, 45 INT0, 1 (from ASIC) RFI pins 1,63/RXI, RXQ RFI pin 3/EXTBG (4.096 V) RFI pin 4/VCM (2.35 V) RFI pin 6/TXC (to RF) RFI pins 8,9/TXQ+, TXQ–...

  • Page 13: Audio Fault

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation Audio Fault Audio fault Microphone or earphone signal missing CODEC pin 15/SYNC (from ASIC) CODEC pin 16/CODEC_CLK (from ASIC) Microphone and DSP pins 79, 82/PCMCOSYCLKX (from ASIC) earphone signal DSP pins 60, 81/PCMDATRCLKX (from ASIC) missing? DSP pin 80/CODEC_CLK CODEC pin 21/HF_MIC...

  • Page 14: Rf Troubleshooting Instructions

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation RF Troubleshooting Instructions The RF part consist of RX, TX and synthesizers as main blocks. Interface to the rest of the radio is mainly through RFI. In normal use, in the network, it is not possible to localize a malfunction to any of these parts alone, because all of them may be needed to operate the radio.
  • Page 15 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation 1.1. Check 13 MHz signal: – RXI and RXQ > 0.3 V at 12.93 MHz. – J702 input to 13 MHz filter > 0.5 V – Check RXPWR J705 = 5 0.1 V – Check 8.5 RX TX SW J703 = 7.7 0.1 V 1.2.
  • Page 16 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation 2.1. Check the VCXO: After AFC is done, the tuning voltage will stay high. In other modes the tuning voltage will be in mid. – Measure at J902: > 3 V – High tuning: freq = 26 MHz +400 Hz 100 Hz –...

  • Page 17: Tx Part

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation TX Part 1. Check burst output: Via PCLocals select local mode, RF control, TX mode, Power level 10 (23 dBm), Operation mode burst, Data type random, Continuous mode channel 60, Channel 60, Monitoring channel 1. Measure with spectrum analyzer on the antenna connector (40 dBm max signal needs an external attenuator), and with scope on the power amps control input pin 2.
  • Page 18 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation 1.3. Modulator and LO signal generation: Via PCLocals select local mode, RF control, TX mode, Power level 10 (23 dBm), Operation mode continuous or burst, Data type random, Continuous mode channel 60, Channel 60, Monitoring channel 1. Measure with oscilloscope probe and spectrum analyzer.

  • Page 19: Uhf Synthesizer

    P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation UHF Synthesizer Via PCLocals select local mode, RF control, TX mode, Power level 10 (23 dBm), Operation mode burst, Data type random, Continuous mode channel 60, Channel 60, Monitoring channel 1. The synthesizer will switch between channel 60 and channel 1.
  • Page 20 P.A.M.S. NME–2A Troubleshooting Instructions Technical Documentation [This page intentionally left blank] Original 08/97 Page 20...

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